Geoff Crolley says

This Pont's map of Kyle printed in 1654 shows: Castle Lesno (Liefnorris, now Dumfries House estate), Castle Keyil (Kyle) and Kumnock Castle (New Cumnock). http://www.nls.uk/maps/atlas/blaeu/page.cfm?id=85

Geoff Crolley says

Cumnock's part:

1296 the abject Baliol surrendered at Kincardine or Brechin his crown and realm to Edward. In the following year the Earl of Carrick, with other Scottish nobles, received a summons to accompany Edward to Flanders as his direct vassals.

The Scotch, like many English Barons, declined to obey a summons in excess of feudal obligation, and Wallace, during Edward's absence abroad, having raised the standard of revolt, Bruce, although, according to Hemingford, he had sworn allegiance to Edward at Carlisle on the host and the sword of Thomas Becket, joined for a brief space the army of the popular leader.

Urgent letters had been sent to him to aid the Earl of Warenne, Edward's commander, then advancing towards Scotland, with as many men as he could muster, and at least a thousand foot from Kyle, Cunningham, Cumnock, and Carrick.

Instead of complying, in June 1297, along with Wishart, Bishop of Glasgow, James the Steward of Scotland, and Sir William Douglas, he laid waste the country of the adherents of Edward. Warenne, an inactive general, sent in advance Henry de Percy and Robert de Clifford, who succeeded on 9 July 1297 in making terms with Bruce and his friends by the treaty called the capitulation of Irvine.

On 10 May (1307) he (Wallace) defeated the Earl of Pembroke at Loudon Hill, but failed to take Ayr. Edward, in the end of August, roused himself; but a march to and back from Cumnock without an action was the whole inglorious campaign.

His favour for Piers Gaveston and consequent quarrels with the chief Barons of England, as well as his approaching marriage to Isabella, daughter of Philip the Fair, led him to quit Scotland.

Contributor: AE M. published 1886

http://www.red1st.com/tng603/getperson.php?personID=I1748568513&tree=Axholme

Geoff Crolley says

(New) Cumnock castle According to Dr Fiona Watson, Cumnock castle which was owned by the eastern nobleman, Patrick, earl of Dunbar, “had the dubious honour of being the point at which the dying Edward I, desperate to bring Robert Bruce to book, was forced to turn back into England in 1307 due to his ill health. Edward II also stayed there during his campaign in August 1307. The castle was restocked immediately after Bruce’s skirmish with an English force at Loudoun Hill, suggesting that it was regarded as strategically critical in this period, as the English sought, unsuccessfully, to encircle the Scottish king.” http://www.east-ayrshire.gov.uk/comser/tourism/William%20Wallace.pdf